an experienced nurse practitioner or physician who agrees to both assist and evaluate

an experienced staff member who supervises the clinical learning of the new nurse or nursing student and guides the inexperienced person (preceptee) during their orientation and training period

a nurse who takes charge of the orientation of a new staff member

a pharmacist, licensed in good standing, who accepts the responsibility and takes the time to educate and train an intern in practical experiences

One who gives commands, or makes rules; specifically, the master or principal of a school; a teacher; an instructor.

teacher at a university of college (especially at Cambridge or Oxford)

an abhyasi who has been prepared and permitted by the Master to introduce people to the Sahaj Marg system and conduct group meditation

A Preceptor is a teacher responsible to uphold a certain law or tradition, a precept.